[sane-devel] I/O Errors with hp 7400c

[Olaf Meeuwissen]

Hi Wolf,

Wolf Drechsel writes:

> Allright.
> In the meanwhile, I did a test with a recent debian 8.6 - and
> found, that the scanner works nicely in that environment.
> So I guess, this is NOT a hardware issue.

Not on the scanner side at least.

> I tried
> SANE_DEBUG_AVISION=7 scanimage > testfile 2>scannerfehler2.txt
>
> and produced the file attached. (After this attempt my machine's USB
> bus was blocked again, so a cold reboot was required)

Was this on the same machine as where you tried with debian 8.6?  Was
the scanner plugged into the same USB port?

I've looked at the log and it seems that the scanner doesn't reply.
At line 1109, it says:

  [avision] No data arrived.

This could be indicative of a USB3 issue, something Simon Matter already
mentioned.  To get a better picture of what's going on at the USB level,
could you provide a compressed log made with:

  SANE_DEBUG_AVISION=8 SANE_DEBUG_SANEI_USB=5 scanimage > testfile

> Could somebody be nice enough to tell me where a bug report should go
> to? - Is it a SANE, a ubuntu - or a <thirdparty> issue?
>
> Thanks in advance,
> Wolf
>
>
> Am Freitag, den 04.11.2016, 07:18 -0400 schrieb m. allan noah:
>> try:
>> 
>> SANE_DEBUG_AVISION=7 scanimage > testfile
>> 
>> allan
>> 
>> On Fri, Nov 4, 2016 at 5:30 AM, Wolf Drechsel <wd-p at trolink.de>
>> wrote:
>> > Am Mittwoch, den 02.11.2016, 19:47 +0100 schrieb Wolf Drechsel:
>> > 
>> > Hello everybody,
>> > 
>> > my HP scanjet 7400c worked nicely over many years with ubuntu.
>> > Now, for no reason I can see, it starts to throw I/O errors - the
>> > same on the desktop with ubuntu 16.10 and the laptop 16.04. - I
>> > suspect, it might be a hardware issue, but would be grateful for
>> > experts' hints before I trash the device.
>> > 
>> > 
>> > An additional question:
>> > How can I achieve more verbosity to find out what's going on?
>> > 
>> > scanimage -v -L or
>> > scanimage -v >testfile
>> > 
>> > didn't do anything, dmesg neither provides much useful information
>> > - and g**gl wasn't my friend in that case.
>> > 
>> > Cheers,
>> > Wolf

Hope this helps,
-- 
Olaf Meeuwissen, LPIC-2            FSF Associate Member since 2004-01-27
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